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10. Preston Brown Position: Inside linebacker Why heu2019s on the list: Brown struggled as the defenseu2019s u201cquarterbacku201d last season, eventually having play-calling duties stripped. Heu2019ll get another shot this year. He has to make sure everyone is lined up correctly u2013 then perform his job.

Harry Scull Jr./Buffalo News

9. Charles Clay Position: Tight end Why heu2019s on the list: The leagueu2019s fourth-highest paid tight end takes a team-first approach to his job, but it will be a disappointment if his individual numbers donu2019t improve. Clay needs to be the offenseu2019s third option behind LeSean McCoy and Sammy Watkins.

Mark Mulville/Buffalo News

8. Aaron Williams Position: Safety Why heu2019s on the list: Returning from a potentially career-ending neck injury, Williamsu2019 status will be closely monitored to see if heu2019s physically ready to play. If he is, it should be a huge boost to Buffalou2019s secondary. If heu2019s not, the Bills have a big hole to fill.

James P. McCoy/ Buffalo News

7. Cordy Glenn Position: Left tackle Why heu2019s on the list: Glenn got a huge-money deal to be the teamu2019s franchise left tackle. Now, he needs to go out and prove heu2019s worthy of that type of contract. Making the Pro Bowl would be a good way to start.

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6. Stephon Gilmore Position: Cornerback Why heu2019s on the list: Gilmore is entering the final year of his contract, and is angling for a deal to make him one of the gameu2019s highest-paid players at his position. Heu2019s played a full 16-game season just once in his career. If he can stay healthy, itu2019ll go a long way toward earning that new deal.

Harry Scull Jr./Buffalo News

5. LeSean McCoy Position: Running back Why heu2019s on the list: After another tumultuous offseason that looks like it will fade away without an NFL-imposed suspension, McCoyu2019s biggest challenge will be staying healthy. The Bills want to be a run-first team, and are depending on him to be the driving force behind that.

Mark Mulville/Buffalo News

4. Jerry Hughes Position: Edge rusher Why heu2019s on the list: With Mario Williams gone, Hughes is now the man as the teamu2019s primary pass rusher. Everyone knows how bad the team was at that last year, so Hughes will be counted on to lead the resurgence.

Mark Mulville/Buffalo News

3. Marcell Dareus Position: Defensive tackle Why heu2019s on the list: Dareus got his big-money extension before last season, but responded with the worst statistical season of his career. Stats arenu2019t everything at his position, but theyu2019re something, and the Bills are paying Dareus to be one of the best players in the NFL.

Harry Scull Jr./Buffalo News

2. Sammy Watkins Position: Wide receiver Why heu2019s on the list: Watkins has undeniable star potential, as the last nine games of 2015 showed. He also has very real injury concerns, with a multitude of ailments over his short career. The Bills need him at 100 percent this season, and to give him an increase in targets.

Harry Scull Jr./Buffalo News

1. Tyrod Taylor Position: Quarterback Why heu2019s on the list: A no-brainer for the top spot, Taylor is playing for a new contract as the Billsu2019 franchise quarterback. Should he prove worthy of it, thereu2019s a good bet his play will have helped Buffalo end the longest playoff drought in North American professional sports.